Unreal Engine Issues

Interpolators of Particle Dynamic Parameters Need "nointerpolation".

Regardless Niagara or Cascade, dynamic parameters for particles are passed to pixel shaders from vertex shaders via InterpolantsVSToPS. It can cause a precision error on some materials, for example ...

r.setRes does not Allow true fullscreen on Mac

While playing in editor, executing the Console Command: "r.setRes 1920x1080wf" produces the exact same results as "r.setRes 1920x1080f" which is to create a fullscreen window with a border across th ...

Crash when moving map assets used as level instances

Gamepad continues to control editor menus during Mobile PIE session

When using a Gamepad, there is an issue where input from the controller continues to control editor menus during Mobile PIE session. This issue does not a appear to be a regression. Versions Tested ...

Collision Not Working on Dynamically Spawned Objects While Using 'Cook Blueprint Component Data for Faster Instancing at Runtime'

Dynamically spawned objects' collision does not seem to be working in a packaged game when the Cook Blueprint Component Data for Faster Instancing at Runtime option is enabled. Found in 4.14.1. Un ...

Crash after Clearing Sound Wave Asset and Deleting Media Player from Content Browser

A crash occurs when deleting a Media Player asset from the Content Browser that contained a previously referenced Sound Wave asset. This issue does not occur in any past engine versions as the prev ...

KiteDemo: Bookmark spawn function broken if in Run mode

While testing in KiteDemo - //UE4/Release-4.16 CL 3420042 in Binary – I found that pressing the bookmark attraction Scene keys (1 - 0) does not work as intended if user is in Run mode. ...

Actor instance FComponentReference to other actor instance gets nulled on other actor recompile

An editable FComponentReference property on an actor instance can be used to reference another actor's component in the scene. In 4.27 and earlier versions these references were retained when the ot ...

Enum to string conversion has different results in PIE vs Cooked builds

This is because the metadata is editor only and will be stripped in a cooked build. We should make the behavior of the to string function consistent between PIE and a cooked build. ...

Long delay on iOS Device Output Log can cost loss of logging on some devices

If the delay to begin printing the log to the window is too long, some of the logging can be thrown out. This issue does not occur with Android Device Output log UPDATE1: The last time I reproduce ...